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Once someone reaches a certain muscle state, if they undergo muscular atrophy and lose it, is it easier to get back to it than if they had never reached it. Is this a biological effect and if so is there a name for it? Any scholarly sources would also be really appreciated

  • For my 11 year experience bodybuilding and from all the people I know, I can't explain it cientifically why this happens, but I can confirm that muscle has some kind of memory, and when you reach a state and you lose it, then is easier to recover it. – masmic Oct 21 '14 at 8:40
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http://www.ncbi.nlm.nih.gov/pubmed/20713720

Myonuclei acquired by overload exercise precede hypertrophy and are not lost on detraining.

Bruusgaard JC1, Johansen IB, Egner IM, Rana ZA, Gundersen K.

Abstract

Effects of previous strength training can be long-lived, even after prolonged subsequent inactivity, and retraining is facilitated by a previous training episode. Traditionally, such "muscle memory" has been attributed to neural factors in the absence of any identified local memory mechanism in the muscle tissue. We have used in vivo imaging techniques to study live myonuclei belonging to distinct muscle fibers and observe that new myonuclei are added before any major increase in size during overload. The old and newly acquired nuclei are retained during severe atrophy caused by subsequent denervation lasting for a considerable period of the animal's lifespan. The myonuclei seem to be protected from the high apoptotic activity found in inactive muscle tissue. A hypertrophy episode leading to a lasting elevated number of myonuclei retarded disuse atrophy, and the nuclei could serve as a cell biological substrate for such memory. Because the ability to create myonuclei is impaired in the elderly, individuals may benefit from strength training at an early age, and because anabolic steroids facilitate more myonuclei, nuclear permanency may also have implications for exclusion periods after a doping offense.

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  • Care to expand, rather than a terse, cryptic statement with a generic wiki link? – JohnP Dec 18 '14 at 14:53
  • ok, i edited the answer ) – Sergey Dec 20 '14 at 18:11
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I think so, based on my own personal experience.

A lot of training is about forging neural pathways (which is fairly well documented) and learning the movements. Those stick with you for a long time, in addition to the knowledge of how to successfully train.

So specifically from a "muscle" standpoint I don't know if any research has been done. But I've seen people who stopped training go back to the weight room and they rapidly advance.

In fact, and I remember reading up on this in Practical Programming (Rippetoe) a major problem with folks who re-enter training after a significant absence can actually pick up a lot of injuries because their CNS/muscles/connective-tissue are totally of balance.

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